21478790

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{29423}}^1$

素因数の和:29503

約数の個数: 16

約数和(自身を含む): 39192768

約数和(自身を除く): 17713978

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 29423, 58846, 147115, 294230, 2147879, 4295758, 10739395, 21478790]

約数ペア:

[(1, 21478790), (2, 10739395), (5, 4295758), (10, 2147879), (73, 294230), (146, 147115), (365, 58846), (730, 29423)]